/*
 * FLINT PARTICLE SYSTEM
 * .....................
 * 
 * Author: Richard Lord
 * Copyright (c) Richard Lord 2008-2009
 * http://flintparticles.org/
 * 
 * Licence Agreement
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.flintparticles.threeD.geom 
{
	import org.flintparticles.threeD.geom.Vector3D;		

	/**
	 * @author user
	 */
	public class Vector3DUtils 
	{
		public static function getPerpendiculars( normal:Vector3D ):Array
		{
			var p1:Vector3D = getPerpendicular( normal );
			var p2:Vector3D = normal.crossProduct( p1 ).normalize();
			return [ p1, p2 ];
		}
		
		public static function getPerpendicular( v:Vector3D ):Vector3D
		{
			if( v.x == 0 )
			{
				return new Vector3D( 1, 0, 0 );
			}
			else
			{
				return new Vector3D( v.y, -v.x, 0 ).normalize();
			}
		}
	}
}
